The page contains Magma programs for computing the units of cyclotomic fields of small orders (<130), and for computing the unit groups of integral group rings of abelian groups of orders <= 50. The files are:

• unitlist.m for units of cyclotomic fields.
• groupunits.m for units of integral group rings of abelian groups.

At the top of the files the provided functions are explained, and illustrated by an example.